The study claims the higher the temperatures, the more the roaches are able to use their muscles. And the more activity they get, the chance of them stopping goes down. That's probably why in humid states, like Texas and Florida, the flying insects are simply a part of life.
Researchers say the ample trash supply in New York has encouraged the roaches to stick to the ground over the years. On the plus side for the bugs, that trash supply can now provide all the energy needed for the pests to infest the air.